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Gary E
Gary E
Medford, Oregon
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lucas alternator rotor 465674 upgrade?
#808995 05/15/20 8:03 am
Joined: May 2020
Posts: 6
Bjorn Offline OP
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Just wondering if anyone has changed their alternator from the very early 1953 model 465674 to something more available.

I'm putting my 1953 Speedtwin 5T back together, one of the first bikes to sport alternators.

The oem is starting to break up, and I'm struggling to find a replacement for it, plus the fact that a 70 year old magnet is probably getting a bit on the weak side. The RM20 is a similar size, but smaller on the od, and magnetic fields fall away exponentially so would need a corresponding stator in order to keep the spacing correct.

With a bit of luck I'm sure there's a later model that will fit without major modifications all over! 6 or 12v, I don't think it matters :-)

BTW whats the trick in getting images to show?? (set to 750width with .JPG ?)

Thanks

[img]https://www.facebook.com/photo/?fbid=10158073678987295&set=a.10158070772837295[/img]

Last edited by Bjorn; 05/15/20 8:07 am.

In theory there is no difference between theory and practice.
In practice there is.
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Re: lucas alternator rotor 465674 upgrade?
Bjorn #808998 05/15/20 8:23 am
Joined: Dec 2004
Posts: 10,587
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Villiers Services will remagnetize a rotor for £15 plus postage.

Re: lucas alternator rotor 465674 upgrade?
Bjorn #809035 05/15/20 6:52 pm
Joined: Jun 2007
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Call Ace Classics in London. They'll sort you out. You might need one of these, which they carry, in order to use a more modern alternator.
[Linked Image from i.ibb.co]

Cheers,
Bill


Bikes
1974 Commando
1985 Honda Nighthawk 650
1957 Thunderbird/T110 "Black Tiger"
Antique Fans: Loads of Emersons (Two six wingers) plus gyros and orbiters.
Re: lucas alternator rotor 465674 upgrade?
kommando #809041 05/15/20 7:19 pm
Joined: May 2020
Posts: 6
Bjorn Offline OP
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Ah.. was sure there was something about! Thanks Hawaiian :-)
And Kommando... re-magnetising? who'd have thought! Unfortunately my rotor is really rotten, pot metal severely cracked up so no way that is going back into my driveside cases!


In theory there is no difference between theory and practice.
In practice there is.

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